Automatic lock slider for slide fasteners



Sept. 5, 1950 c. DlslNGER Erm.

AUTOMATIC Locx SLIDER FOR SLIDE FAsIENERs 2 Sheets-Sheet 1 Filed Jan. 27, 1945 Sept. 5, 1950 c. DlslNGER E TAL AUTOMATIC Loox SLIDER FOR SLIDE FAsIENERs Filed Jan. 27, 194s 2 Sheets-Sheet 2 INI/ ENTORS tenerstringers (tapes with mounted fastener'elei'zifwliih Y Theiise of'separate springs with the diniiil'tiefs'` 35 channel C is a Y-shaped channelras be This inventioii'relates oanwirnproedfaiito fasl'svouglit to be d neg Nappe ded matic lock'sliderfor'slidefastenersL Slidefasten'ers `c onfip'rise tWo mating slide' fasytaken togetherwithtlie panyirigfidrawings ments) `brughtfintof"and out'of meshingor4 xflat'f' y5 afroriteleyati ing relation by the'moyementof aso-called slider b rkezj away; off/the'look'` slide of vthe Vpresent mf- "through the slide*channel vofjwhiehtlie stringers vention; 'ff ff' Slideoriidopfe.ll It'is necessary to'providea suit` Eig. 2 is aview'ftl'i'ereof takeriineros's'setioii able' locking device vfor the slider tolfpifevent'the in the' planes of line 2"2 of Figyl an'dfshowing strngers ac cidentallyiopening during-ose; Ae-f 1Q "theloekin'g me'm'bfer in itsloeking'position; x coi-ding tofne type of lockslider thelocking Fig.` Sufifs"af'perspeetiye'*exploded yiewjofttlie "n'einbi' is made'sdas'ltdbe'entiiely automaticl in ront vyiiigfoi ti'efsliiii'r and the vlotikirigfmember vv`its locking operation.f"'filie"oonri1onj forni of'au'- 1 y A, J 'j tomatic loekfrs'liderV embodies' a *lciekinfg member ')Figliiis'a fonteleiational'iiiew with" a p on' the'slider which ormallylield in its .lookl15 VVbrokent away," of a? ing position by a" sb'ng and w'hih is moyle'd slider'of'the pijesnt'inveiitionff against the action of the s pringbyjapulljele- .ment lconnectedto the lockingl member-. Our 'present invention` relatestoanffirprovedfaiitbfand- I 4 y niaticlocksnder fthis type. u y TP 2o Figs. sand l1 @reviews 'similar-to Figspi ands, The *primel objects 'of""o1'1r'inyeition" Y y `but"`sliwinga*indiati*"ofthe strct'u 'ff f'about th1'nro` v`isi`o1`1fog'l automatik" Fgs.4 and 5.V l l f featured by the 'fdnwingimprovements, Referrir'fg njdw 'o'ref in"`detdi1 `r1:0 che drawings art View', with" a; p rit modified 'farm di Vthe [16er elements,v namelyfthe slidergtlie locking' meir- 25 "tHe inventionis shown apbliedfjoa crileiitional y ber, and the vp'ull elelner'it.-A "Tlfies'e* `three parts flslide'fasten'er'comprising the-slider? S "provided arefso designedY and con'st1f1icte-d"aticordiiig'tov the 'with the fint'rior' 'slid'liannel lC and* the? two 'fi-e'sent inve ntionjthat they are' capable of 'being l'stringei's s, s'jthe' latter each comprising 'a jbeaded most conveniently and qickly'assenibledj'f Y tape t Withthe spaed'slde'fastenerelemerts'fQj 2. To aehie've'this the'lo'pking niember embody- 3 0m'our`1ted thereon',"tl'i@said"stifingei'sy being adaptfspacev availableA yon a slider,` the nitary'lo'ciging d elements miovwhelithey arey disengaged, as is 'member is so'constructed that '-a'inplef oiorating 40rnoste1earlyslown iny Figil -of the da'vvirvigsfw` vleverages a'reC oltained for eiectin'g'the autinatic f i, f According to One'fforr'ii offkliownj`stiu'ctief, flockingoperation and the unlocking operation lili "slideff-(Sfco'iiiprs's a 'rear'obottom Wing'section.

prisesineffect a two-armed leve the sli'd'en one arml being the locl1ngarm ofthe. l lever projecting into the sliderchanel .'terininatfing' in-"a locking tooth, and' theothe'r'armbf dswaiafeubwarafpiiiiing sprsiiii, alieni-iii: r

ingfnie'rnber Lautomatically returnsfto itslig.v 2 'iiikirigposiiim t -1 i "'i I'I the* modified embodiment of "the *invention shovvnin Figs. 4' and 5-of vt'hedrawings the force aetin'g upon the resilient arm'l or arms of the lkin'g member is derived from engagement With Y 'th'fias'ienerjeismenis f the' siringe'rs. Both the vslider and the locking'member are modied accordingly, the 'part'sthereof being votherwise `similar to the parts ofthe structuralembodiment i 'f lFigs. 1' to 3-of the drawings, thesirnilar parts s",'uie-1i`rg-32', and their' associated; parts, are

Substantially the same as inthe slider of Figsfl to 3 with the exception that'the orifices Blij' 'and 38' izijsteau ofy being longitudinally linear are 'formed with the diver'ging branches et, 92 Viii/nich alignmentfwith the. Y branches ofi'the rslider channel, ras best'shown in'Fig. 4 oflthe drawing's,` both of these orice branches 90 Aand v '92"'opernrig into the Ybranchesf of the slider channell k"I'he'lo'clring lever L embodies a form 'and'sh'ape similar tothatofftheiFigs. 1 to Q3 structure, the essential difference being that the fear resilient arms 50'? and 52"'instead of being,T 'longitudinally linear are also" formed withv cor-v r'es'ponding'diverging branches 94 and 9S"project ing Athrough the diverging orificey branches 99 and 92 having upper free ends which are adapted to engage and be engaged vbyv thev separated i 'Stringer fastener elements f', f movingl through the' lslider branch channels. This 4lever L; may

also be provided at its upper endonone'side. with a lug extension 98 adapted'to engage thev wall` portion |00 of vtheslider t'xnfforrnfa stop in'eansftlierefor for 'limiting the outvvard :notion f-'ihe-ioskingmemberyL'i/f *"In"A this structural modilcationyof theinve'ntiohf 'the resilient arms 5ff`and52 Lfare, alsl 'under aninitial ',tension, tending tok c'cr'ir'ltractv the frigid' andiresilient arms of the locking'"rnember`," the tension'ibeing derived frorhthe sliding and pressu're engagement exerted inthe branches of the slider channel b'ythe"slide `fastener eleinent's if Imoving'against the freeehds of theV resilient'. 'arm branches 94 andf96 islclearly "shownI-i'in Figs. 4.y and 5 of 'the'dravvingsjf The .forc'e exerted may be a direct vlfaressur'eoral fric- =tional"iorce`, `or a -composite f both IInthi's form ofthe invention 'the lockingf-m'emb cem'- ulcrumed' on the lever comprising'the 'resilient 'armwh'ich l terminates* in the ,point of' isi/efr ,zajpplieajiidii namely,Vv the point lof engagement with' thev slide fastener-'elements in the branch'chan'n'elsf` point of lever application exerts the force which tensions ithe resilient arms` cau'sing'ithe lever to l f: Tro'ckfcn 'itsfulcrumautoinaticallyinto; 'the lock' Q'ingposition. pull' in either `direction' onfthe l pullidevi'ce 14" operates to'rockthe leverI r locke `ing'.mem'ler L in' itsopposite direction't disi engage thelocking teeth and move"'the."j`slider toy-open position. In Aithel-lock"slider-'disclosed insure iiviikuias: ani-1,.:Jones Painsgeoaav;.the

creased by causing-the stringers to bend/out 'of theirf'normalV pathf-fthisplaeing the stringers under` a natural --resilien'ce. In `the i structure shown in Figs. 4 and 5 of the present invention;

suicient acting pressure may be obtainedwith- .out causing any deflection the movementof the stringersyjthefforce being obtained mainly by' the resilient` action and `movement ofthe vIie'cted outof their normal paths andthuspro lducje aresiliencytherein, and this is illustrated `in'the'modification' shown in Figs. 6 and 7 of the drawings. This` modification is substantiallythe same as that shown in' Figs.y 4 and sfwiui the ex;

c'eption rtobe noted-and, therefore, similar parts are vdesignatedbysimilarv referenee characters '-'differentiated, however, bythe exponent 2L In this1 i'riedification,` vto increase thepressure com-',- ponent atfthe'point of application, a" depression 'or cavity 'l |12y is provided-in the rear wing 2 02 'arrangedopposite'jthe upper lfree ends of' the resilient branch". arms 942 vand 962 which latter are formedv with channel protruding enlargementssuch as |04`(see F'igfl);y `With the provisionof the depression |02, the stringers bend out of" theirnormal path and the slide yfastener elements-are deflected'intofthis depression, and this deflection, due to the' natural resilienceof the stringere, `causesy the y fastener 'elements to contact lor enga'gethe points' ofl application'` IM with Ian increased pressure. This," combined with the :resilience of the arms 502 andEZZproduces a firmly a'ctin'glockslide'r. "i I The making aridfusingv ofthe loc'kslider ofthe present invention and the advantages thereof will in the mainbe fully apparent from the above def taileddescription thereof; In all `exempliiied structural lforms ofthe invention the lock slider `is composed; ericept'-for `the hingepintle, of three elements',v narnely, the slider;l theV lockingimember, and the pulliiievice.l "fll'hese three elements are Sodes'igndv and constructed that they' are capable of being mosteonvenientlyf and quickly assembled. The locking meinber'is' Vformed as a unitary piece and preferably its three parts,

j namely; the lockingjarm, 'the detent (orv detents) and the'springv'arm (or springjarms), are formed iniegraiiy'anq' 'preferably shaped (as are lau 'of the parts of ytheslider)A out oi sheet stock.v This lockingmemberis so designed'ethat it'may be 'readily' moiinisdon'shs front wingpffihe slider. In" thev construction'thus `Vlr'zrovideol, despite the iimiistios irppossd'lbyi'iisj smau space available Ionf-the slider; am-ple yoperating i leverages are. ob#- taine'd i'orfeiectihg'both the automatic locking ops'rsuoiil and -i-,heuniocking"operation f the slider-if` t 'I ingarmfof thefslider isan extensive one and extends over`a`fsubsta'ntial,v suchasl 'thefgreater part; of 'the' 'slider' length, and thel leverage for the resilient' arm or''a'rm's :thereof is alsoan :e tensive one: and `extends over' a' substan'tiallyl simeilar'iengthfoff-the siiusr.v 11iv suoi ihstrcturai foimsfuis resilient-'astma is 'obtained by een? traciirigjihfar'ms qf'theioskiriqMember,v gans the force for produeingI contraction maybe oh;

'tainedeitl'ier by--anengagem'ent Yderived from a Ipsa of tue-'slider wan rflfromftnemovifig slide fastenerelements;Y themselveslf" l Y l i While We:l have shown ianddescribe'df preferred adjaeent'is bottom end proujectingintotlrelS1der A f f l y'REFERENCES CITE V y channe1-the free end of 'the from arm bemg ful" The following references are of record in `ther ,of the rear arm projecting 'into the slider chan,-

fulcrum of the front arm for'engagement at said Number Name 5 Date upward portion by fastener elements on said vv117,781 Y Gutberlett 1934 stringers `Jvlrlereby the engaging force so applied 2,215,745 Sundback -1 Sept. 24, 1940 `lthereto will move the locking membertolOCkng 2310,609 iBer'kner Feb. 9, 1943 position, and means` connected tojsal' locking to y2,322,826 Carlile June 29, 1 943- `rmember for moving 'the s'amejin. opposition: to 2,360,437v l Mikulas et a1. Oct. 17, 1944 -R locking position.

2,521,453 ff" y "y Crrned on therslder front wing, and the free endf l me of this patent:

nel and extending to a point upwardly of` said 5 UNITED STATES PATENTS' lsaid force to move the looking member to un- `FOREIGN PATENTS l ,l

, LAUDE DISINGERQ Number c i Country' v Date Y FREDERICK ULRICH, 15 400,'1-82 .n Great Britain f Nov. 2, 1933 

